Speed control for elevators



Nov. 1, 1932. P. MANISCALCO 1,385,453

SPEED CONTROL FOR ELEVATORS Filed March 15, 1930 INVENTOR P/ETR'U ZYYAN/EEAL :0

ATTORNEY Patented Nov. 1, 1932 UNITED STATES PATENT OFFICE- IPIETRO MANISGALC O OF ST. LOUIS, MISSOURI, ASSIGNOR F ONE-FOURTH T0 JOSEPH MANISCALCO, ONE-FOURTH TOJOSEPH BOCCHIERI, AND ONE-FOURTH TO OORINNA. BOGCHIERI, ALL OF ST. LOUIS, MISSOURI SPEED oonrnor. r03 ELEVATORS Application filed March 15, 1930. Serial No. 436,095.

This invention relates to speed control for motive power driving the elevator car within the elevator shaft is obtained from an electric motor and mechanism traveling'with the car, and controlled by a human operator, the speed control having suitable connections with a source of power. 1

The primary object of my invention is the provision of a speed control for elevators of this character providing simple but efficient means for regulating the speed of the elevator, giving maximum simplicity of construction, maximum efliciency of operation, a mechanically balanced movement and added safety.

Another object of my invention is the provision of a speed control for an elevator of this character having the driving means mounted thereon and means in the elevator shaft interengaging with the driving means for propelling the elevator.

Another object of my invention is the prol V1S1011 of an elevator of this character comprehending an electrically driven car, the driving mechanism being of the gear train type, revolving cogged drive wheels engaging rack rails mounted in the shaft and of special design.

Another object of my invention is the provision of a speed control for an'elevator having an electrical controlling apparatus of novel design, wherein means are provided for regulating the speed of the elevator in its upward and downward movements.

Another object of my invention is the provision of a speed control for an elevator of this character that is less expensive to manufacture, of compact formation, readily assembled, easily installed, and of eflicient and durable construction and of minimum expense in maintenance.

Another object of my. invention is the provision of a speed control for an elevator of this character having special forms and constructions having the various parts employed, the provision of novel arrangements for standard application, novel-arrangements for regulating the speed of the elevator in its upward and downward travel and means for automatically controlling the speed limits.

To these and other objects, therefore, the nature of which will be readily understood as the invention is hereinafter disclosed, my invention consists in the novel arrangement and construction of the various parts of my speed control whereby certain important advantages are attained and the apparatus rendered simpler, less expensive and moreconvenient and facile for installation, use and employment, hereinafter more fully described and illustrated in the accompanying drawing and more particularly pointed out in the accompanying claims.

In the accompanying drawing, in which similar reference characters or numerals indicate similar parts in each of the several away;

' Figure 2 is a cross vertical "sectional view on the line 2-'2 of Figure 1; and V Figure 3 is a front elevation detached of my improved speed control.

Referring specifically to the drawing, 11 indicates the electric motor of any form of construction, having the source of supply for electricity 12, and having its shaft 13 passing through the housing box 14.

Upon this shaft 13 is secured the worm 15 engaging with a worm gear wheel l6 which is secured to the axle 17 being connected by a journal bearing (not shown), and the end passing through the speed control box 18.

On this shaft 17 is secured the clutch mechanism 19 of the usual construction, which will enable the operator to make the necessary repairs, and in the event the elevator should stop between the floors on account of the current being cut out or other defects in the working part of the elevator the operator by manipulating the foot lever 20 controls the clutch mechanism 19, regulating the brake pressure on the shaft 17 and the car will travel downward at a regulated speed until it reaches its downward destination when it will stop.

On the other end of the shaft 13 in the housing box 14: is a gear wheel meshing in another gear wheel on shaft 21 and this last mentioned gear Wheel meshing with the gear wheel on the main shaft 22, all the gear wheels in the housing not being shown in the drawing To this main shaft 22 is secured at each end gear wheels 23 traveling in tooth racks 24.

The shaft 17 passing through the speed control box or housing '18 has its bearing in the sleeve portion 25. On the shaft 17 after it passes through the speed control box or housing 18 is provided with a collar 26 having projections 27 to which the sections 28 and 29 of the speed control clutch is secured, as shown in Figure 2. n

On the inner side of the speed control box or housing 18 and secured to the shaft 17 is secured the sections 28 and 29 heldin place by the coil springs 30. Said coil spring 30 having regulating screws 31 to regulate the speed of the car. Around the periphery of these sections 28 and 29 is secured the felt or any other frictional material 82 which will come in contact with the inner surface of the speed box or housing in the event the speed of the car shouldby some means exceed the regulation speed, thereby reducing the speed of the elevator.

WVithout further description it is thought that. the features and fadvanta'gesof invention will be readily apparent to those skilled in the art, and it will, of eo'ur'se, be understood that changes in the form, proportion and minor details of construction may beresorted to, without departing from the spirit of the invention or its scope as aimed- What I claim is: n o

1 In a speed control for elevator or the character described, comprising a main drive shaft, a worm secured thereto, an auxiliary shaft, a gear wheel secured to the auxiliary shaft and meshing in said worm and means for driving same, and a frictional brake mechanism secured to one end of said auxiliary shaft.

2. Ina speed control for elevator of the character described, a main drive shaft, a worm secured thereto, an auxiliary shaft, a worm wheel secured to said auxiliary shaft and meshing with said worm, expansion section secured to said auxiliary shaft and having a means for regulating said expansion sections.

3. In a speed control for elevator of the character described, a main drive shaft, an auxiliary shaft, means for transmitting power from the main shaft to the auxiliary shaft, expansion sections secured to said auxiliary shaft, springs secured to said expansion sections, screws secured to said springs to regu-' late the tension of said springs for controlling the action of said expansion sections, and a housing in which the expansion sections frictionally contact.

4. In a speed control for elevators of the character described, comprising a motor operated main drive shaft, a worm mounted thereon, an auxiliary shaft, a worm gear on the auxiliary shaft and meshing with the worm, and means for regulating the speed of said auxiliary shaft.

5. In a speed control for elevators of the character described, comprising a main drive shaft, a Worm secured thereto, an auxiliary shaft, a clutch secured to said auxiliary shaft, a housing, said auxiliary shaft passing through the housing and expansion shaft secured to said auxiliary shaft and located in the housing. I

6. In a speed control for elevators of the character described, a main drive shaft, a worm secured thereto, an auxiliary shaft, a clutch secured to said auxiliary shaft, a foot lever attached to said clutch, a housing, said auxiliary shaft passing through said housing and having secured thereto expansion sections serving as a brake.

7 In a speed control for elevators of the character described, a main drive shaft, a worm secured thereto, an auxiliary shaft, a clutch secured to said auxiliary shaft, a foot lever manipulating said clutch, a housing, said auxiliary shaft passing through said housing, expansion sections secured on said auxiliary shaft and located on the inside of said housing, and means for operating the same.

8. In a speed control for elevators of the character described, a main drive shaft, an auxiliary shaft, means for transmitting power from the main drive shaft to said auxiliary shaft, a housing, expansion sec tions secured to said auxiliary shaft, and operating in said housing and springs secured to said expansion sections for regulating the speed of said auxiliary shaft.

9. In a speed control for elevators of the character described, a main drive shaft, an auxiliary shaft, means for transmitting power from the main drive shaft to the auxiliary shaft, a clutch secured to said auxiliary shaft, expansion sections secured to said auxiliary shaft, a housing for said expansion sections, a frictional material secured to the periphery of said expansion sections, spring secured to'said'expansion sections and means for regulating the speed of said auxiliary shaft. v

10. A speed control for elevators comprising a gear supporting housing, a motor, a shaft operated by said 'motor and connected to gears in the housing, a worm mounted on said shaft, a driving shaft controlled by the gears in the housing and by which motion 

